Initial commit: Klammertext source distribution

Curated source subset assembled by klammertext-dev's doc/make_dist.sh: the Klammermachine (mac), the Standard Klammer Set (sks), the commands (com), editor plugins and install guides (doc), a test subset (tst), and lib/bin placeholders. Builds with 'make -C com'.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

sks/color/color.k

@@ -0,0 +1,8 @@
+@@@argtype color |
+  a color in the form <red> <green> <blue>.
+  :pattern 'float' 'float' 'float'
+  :python_cast (lambda s : [float(e) for e in s.strip().split()])
+@@@
+
+@@color.k rgb :text : Color description as required by the target from @c <r>,<g>,<b> @ input @@
+@@color :: @eval color.Color(K) eval@ @@